Compte tenu de l'intérêt croissant des économistes pour le champ de l'économie sociale (ou tiers-secteur), cet article a pour but d'analyser et de synthétiser les différents arguments auxquels a recours la littérature anglo-saxonne sur les organismes à but non lucratif pour expliquer...

We study horizontal partial acquisitions in an oligopolistic industry in the absence of synergies. Contrary to existing results, we find that a dominant shareholder may choose to acquire shares in a competitor although the aggregate profit of the group of firms under his control, and even the...

In this general equilibrium model, justice and police institutions are treated as a mechanism that induces individuals to extend some desirable productive effort. This determines individual encroachment activities which in turn determine the proportion of aggregate production that fails to be...

We compare the optimal trading strategy of an informed speculator when he can trade ahead of incoming news (is "fast"), versus when he cannot (is "slow"). We find that speed matters: the fast speculator's trades account for a larger fraction of trading volume, and are more correlated with...

French Abstract: Quelles sont les conséquences en matière de bien-être d'une meilleure diffusion de l'information financière parmi les spéculateurs? Pour traiter cette question, nous considérons un marché où des agents non informés échangent pour un motif de partage de risque avec des...

We study information revelation in markets with pairwise meetings. We focus on the one sided case and perform a dynamic analysis of a constant entry flow model. The same question has been studied in an identical framework in Serrano and Yosha (1993) but they limit their analysis to the...

This Working Paper deals with the progresses, but also with the deficiencies, of the Cuban revolution in the economic field, until the recent de-dollarization. It underlines its economic challenges at the beginning of the XXIst century, as well as its internal forces and external opportunities...

French Abstract: Cet article présente les enjeux propres aux études d’impact en Europe. Il propose une introduction historique et dresse un panorama des différentes pratiques des études d’impact. L’accent est mis sur la procédure de diffusion de cette innovation stratégique que...